Brush holder cleaning device

Abstract

The utility model discloses a brush holder cleaning device, which relates to the technical field of generator brush holders, and comprises a fixed cylinder, a metal block is arranged in the fixed cylinder, a push rod is arranged at the top of the metal block, the push rod is movably inserted into a top cover of the fixed cylinder, a scraper is arranged at the bottom of the metal block, and the scraper is movably inserted into the top cover of the fixed cylinder. The metal block and the scraping plate are arranged in the fixed cylinder cavity in a sliding manner; a positioning rod is fixedly connected to the push rod, a spring is arranged on the push rod, one end of the spring is fixedly connected to the positioning rod, and the other end of the spring is fixedly connected to a top cover of the fixing cylinder. The carbon brush cleaning device is simple and small in structure, convenient and fast to operate and capable of being directly placed on the brush holder of the generator, the inner wall of the brush holder can be cleaned through the scraper by pressing the push rod, the carbon brush can freely move up and down in the brush holder, and jamming is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of generator brush holders, in particular to a brush holder cleaning device. Background Art

[0002] Generators use a lot of carbon brushes, and each generator is installed with 48 and 24 carbon brushes respectively. During operation, electrical operators generally conduct regular inspections and conduct special inspections on the carbon brushes to see if their length meets the requirements, whether the spring pressure is normal, whether the carbon brushes are flexible in the brush holder, and whether they are stuck. After a long period of exploration, it was found that the sparking of generator carbon brushes is mostly related to poor contact of the carbon brushes. The main reasons for poor contact are sticking, reduced pressure, and shortened size. If the carbon brush is stuck, it will naturally cause the pressure of the carbon brush to decrease, which will eventually cause uneven current. Stuck carbon brushes are more likely to spark. In the long run, it will not only burn the generator slip rings and affect the service life of the generator slip rings, but also reduce the load, affect the power generation, and bring negative impacts to the company's economy and benefits. Figure 4 The figure shows a schematic diagram of the brush holder structure of an existing generator, where a brush holder fixing part 10 is provided on one side wall of the brush holder 9. The brush holder fixing part 10 is fixed to the motor by bolts.

[0003] By analyzing the problem that the generator carbon brush is prone to getting stuck during use, a simple and practical brush holder cleaning device is made, which is simple, economical, safe, practical, efficient and has a long service life. Utility Model Content

[0004] The utility model aims to provide a brush holder cleaning device to solve the problem of carbon brushes being stuck and needing to be cleaned mentioned in the background technology.

[0005] The utility model adopts the following technical solutions:

[0006] The utility model discloses a brush holder cleaning device, comprising a fixed cylinder, wherein the top of the fixed cylinder is a closed structure and the bottom is an open structure, a metal block is arranged in the fixed cylinder, a push rod is arranged on the top of the metal block, and the push rod is movably plugged on the top cover of the fixed cylinder.

[0007] A scraper is arranged at the bottom of the metal block, the outer edge of the scraper is larger than the outer edge of the metal block, and the metal block and the scraper are slidably arranged in the fixed cylinder cavity.

[0008] The push rod is fixedly connected with a positioning rod, and a spring is arranged on the push rod. One end of the spring is fixedly connected with the positioning rod, and the other end of the spring is fixedly connected with the top cover of the fixing cylinder.

[0009] Furthermore, a device handle is provided at one end of the push rod away from the fixing tube.

[0010] Furthermore, a cylinder handle is provided on the fixed cylinder.

[0011] Furthermore, the top cover of the fixing tube is provided with a reserved hole for movably plugging with the push rod, and the hole diameter of the reserved hole is larger than the rod diameter of the push rod.

[0012] Furthermore, the positioning rod is a right-angled Z-shaped rod structure, and the positioning rod is symmetrically arranged on both sides of the push rod, and two right-angled short arms of the positioning rod are facing the direction of the fixing tube.

[0013] Compared with the prior art, the beneficial technical effects of the utility model are:

[0014] The utility model has a simple and compact structure and is easy and quick to operate. It can be directly placed on the brush holder of the generator. By pressing the push rod, the inner wall of the brush holder can be cleaned through the scraper, so that the carbon brush can move freely up and down in the brush holder to prevent jamming and avoid sparking due to poor contact between the carbon brush and the slip ring. At the same time, the positioning rod limits the maximum stroke of pressing to play a protective role, avoiding damage to the motor caused by operating errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model will be further described below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a cross-sectional view of the brush holder cleaning device of the utility model;

[0017] Figure 2 This is an appearance diagram of the metal block and scraper of the brush holder cleaning device of the utility model;

[0018] Figure 3 It is a schematic diagram of the bottom of the fixed cylinder of the brush holder cleaning device of the utility model;

[0019] Figure 4 Schematic diagram of the generator brush holder structure.

[0020] Explanation of the accompanying drawings: 1. Device handle; 2. Push rod; 3. Positioning rod; 4. Spring; 5. Metal block; 6. Scraper; 7. Cylinder handle; 8. Fixed cylinder; 8-1, reserved hole; 9. Brush holder; 10. Brush holder fixing part. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] like Figures 1 to 3As shown, this embodiment discloses a brush holder cleaning device, including a fixed cylinder 8, the top of the fixed cylinder 8 is a closed structure, and the bottom is an open structure. A metal block 5 is arranged in the fixed cylinder 8, and a push rod 2 is arranged on the top of the metal block 5. The push rod 2 is movably inserted into the top cover of the fixed cylinder 8.

[0023] A scraper 6 is provided at the bottom of the metal block 5, the outer edge of the scraper 6 is larger than the outer edge of the metal block 5, the metal block 5 and the scraper 6 are slidably arranged in the cavity of the fixed cylinder 8, and the outer edge of the scraper 6 is slightly smaller than the inner wall diameter of the brush holder 9. The four sides of the scraper 6 are free of edges and corners and polished to prevent scratching the brush holder.

[0024] The end of the push rod 2 away from the fixed cylinder 8 is provided with a device handle 1. The push rod 2 is fixedly connected with a positioning rod 3, and a spring 4 is provided on the push rod 2, one end of the spring 4 is fixedly connected to the positioning rod 3, and the other end of the spring 4 is fixedly connected to the top cover of the fixed cylinder 8.

[0025] The positioning rod 3 is a right-angled Z-shaped rod structure. The positioning rod 3 is symmetrically arranged on both sides of the push rod 2. The two right-angled short arms of the positioning rod 3 face the direction of the fixed cylinder 8. When pressed, the two right angles of the positioning rod 3 limit the maximum pressing stroke and play a protective role, avoiding damage to the motor due to operational errors.

[0026] The fixed cylinder 8 is provided with a cylinder handle 7. The top cover of the fixed cylinder 8 is provided with a reserved hole 8-1 for movably plugging with the push rod 2, and the hole diameter of the reserved hole 8-1 is larger than the rod diameter of the push rod 2. When it is necessary to focus on cleaning the side wall in a certain direction, just use your hand to slightly apply force in that direction to make the push rod 2 slightly tilted.

[0027] In this embodiment, the fixing cylinder 8 is manufactured according to the size of the generator carbon brush and the brush holder 9. The inner diameter of the fixing cylinder 8 is 31mm*25mm, the thickness is 2.5mm, and the height is 60mm. The front, rear, left, and right sides of the metal block 5 are 4mm smaller than the fixing cylinder 8 respectively. The scraper 6 is 2mm thick and the front, rear, left, and right sides are 2mm larger than the metal block 5 respectively.

[0028] like Figures 1 to 4 As shown, the action process of the utility model is as follows:

[0029] First, hold the barrel handle 7 and align the device with the brush holder 9, press the device handle 1, and the scraper 6 is pressed into the cavity of the brush holder 9 to rub and clean the inner wall. After pressing, release the pressure, and the spring 4 squeezed by the positioning rod 3 and the top cover of the fixed barrel 8 will reset, driving the scraper 6 to reset, and repeat the above pressing process to complete the cleaning action. When pressing, the two right angles of the positioning rod 3 limit the maximum stroke of pressing, which plays a protective role and avoids damage to the motor caused by operating errors.

[0030] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A brush holder cleaning device, characterized in that: It comprises a fixed cylinder (8), the top of the fixed cylinder (8) is a closed structure, and the bottom is an open structure, a metal block (5) is arranged in the fixed cylinder (8), a push rod (2) is arranged on the top of the metal block (5), and the push rod (2) is movably plugged into the top cover of the fixed cylinder (8); A scraper (6) is provided at the bottom of the metal block (5), the outer edge of the scraper (6) is larger than the outer edge of the metal block (5), and the metal block (5) and the scraper (6) are slidably arranged in the cavity of the fixed cylinder (8); The push rod (2) is fixedly connected to a positioning rod (3), and a spring (4) is provided on the push rod (2). One end of the spring (4) is fixedly connected to the positioning rod (3), and the other end of the spring (4) is fixedly connected to the top cover of the fixed cylinder (8).

2. The brush holder cleaning device according to claim 1, characterized in that: A device handle (1) is provided at one end of the push rod (2) away from the fixing tube (8).

3. The brush holder cleaning device according to claim 1, characterized in that: The fixed cylinder (8) is provided with a cylinder handle (7).

4. The brush holder cleaning device according to claim 1, characterized in that: The top cover of the fixed cylinder (8) is provided with a reserved hole (8-1) that is movably plugged into the push rod (2), and the hole diameter of the reserved hole (8-1) is larger than the rod diameter of the push rod (2).

5. The brush holder cleaning device according to claim 1, characterized in that: The positioning rod (3) is a right-angled Z-shaped rod-shaped structure. The positioning rod (3) is symmetrically arranged on both sides of the push rod (2), and the two right-angled short arms of the positioning rod (3) face the direction of the fixed cylinder (8).

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